77 citations · 136 across the 6 of their papers we have counts for
6 papers
Topological Magnon Insulator with a Kekule Bond Modulation
Pierre A. Pantaleon, Ramon Carrillo-Bastos, Y. Xian
We examine the combined effects of a Kekule coupling texture (KC) and a Dzyaloshinskii-Moriya interaction (DMI) in a two-dimensional ferromagnetic honeycomb lattice. By analyzing t…
Edge on-site potential effects in a honeycomb topological magnon insulator
Pierre A. Pantaleón, Y. Xian
The difference between the edge on-site potential and the bulk values in a magnonic topological honeycomb lattice leads to the formation of edge states in a bearded boundary, and t…
Analytical study of the edge states in the bosonic Haldane model
Pierre A. Pantaleón, Y. Xian
We investigate the properties of magnon edge states in a ferromagnetic honeycomb spin lattice with a Dzyaloshinskii-Moriya interaction (DMI). We derive analytical expressions for t…
Coupled-cluster calculations for the ground- and excited-states of the spin-half XXZ model
Mohammad Merdan, Y. Xian
The coupled-cluster method is applied to the spin-1/2 antiferromagnetic XXZ model on a square lattice by employing an approximation which contains two-body long-range correlations…
Longitudinal excitations in quantum antiferromagnets
Y Xian
By extending our recently proposed magnon-density-waves to low dimensions, we investigate, using a microscopic many-body approach, the longitudinal excitations of the quasi-one-dim…
Rigorous results on a first-order phase transition in antiferromagnetic spin-1/2 coupled chains
Y. Xian
Some rigorous results are presented for a first-order quantum phase transition between the dimerized state and Haldane-type state (i.e., a state similar to the ground state of the…